Excavating device



June 5, 1923.

. L45 7,5% P. NEARY EXCAVATING DEVICE Filed May 17, 1922 3 Sheets-Sheetljune 5, 1923.

P. NEARY EXCAVATING DEVI CE 5 Sheets-Sheet 2 Filed May 17, 1922 @emulaJune 5, 1923. 3,457,594

P. NEARY EXCAVATING DEVI CE Patented .lune 5, 1923.

UNITED STATES PATENT OFFICE.

EXCAVATING- DEVICE.

Application led May 17, 1922. Serial No. 561,568.

T0 all whom z't may concern.'V

Be it known that PHILIP NEARY, citizen of the United States of America,residing at Seattle, in the county of King and State of Washington, hasinvented certain new and useful Improvements in Excavating Deljr'ices,of which the following is a specificaion.

This invention relates to an improvement in excavating means of thattype embodyinga power operated shovel-like excavator, adapted to forceor cut its way into the material to be excavated, and to receive a loadfrom such operation for transportation and dumping at a remote point.

In excavators of this type, considerable difficulty has been experiencedin properly loading the excavator by forcing vor drawing the same intothe material, as thru the shovel-like type of the usual excavator, anyobstruction in the path thereof tends to tilt or deflect the excavator,with a consequent reduction in the quantity of material picked Thepresent invention aims to overcome this particular objection, amongothers, by constructing the excavatorjproper of cylindrical form,and'mounting it for free rotative movement in the supporting frame,whereby in the event of an obstruction in the path of the excavator', asimple rotative movement ofthe excavator results without in any wayinterfering with a proper'dig ging and cutting movement of theexcavator. Therefore, a full digging load is assured under allcircumstances.

In excavators of the usual type,'it is customary to provide a door orclosure capable of being released from a remote point when it is desiredto dump the load of the excavator. .f Heretofore, the door locking meanshas formed a part of the excavator proper, and as such accumulated dirtinthe use of the excavator, and required frequent cleaning forsatisfactory service.

A further object of the invention is the provision of door locking orholding means arranged remote from the excavator proper and as suchordinarily free of dirt accumulation, hence insuring a proper releaseand locking of the door under all working circumstances.

The invention is illustrated in the accompanying drawings, in which:

Fig. l is a perspective view of the improved excavator.

Fig. 2 is a front elevation of the excavating receptacle.

Fig. 3 is a detail, sho-wing particularly the door controlling means.

Fig. 4 is a transverse section thru the excavating receptacle, showingparticularly the details of construction.

Fig. 5 is a transverse section thru the excavating receptacle, showingthe means for rotatably supportingthe same.

The improved excavator isy of the type designed more particularly forslidable support on a cable-like member, indicated at 1, the excavatorbeing drawn along thls member to accomplish the excavating work.

The excavating receptacle comprises a cylindrical shell 2, open at bothends and exteriorly reinforced by longitudinally arranged narrow strips3 having outturned edge fianges 4.v The strips extend from the forwardedge of the shell to a point short of the rear edge thereof, and arebolted or otherwise secured at 5 to the shell. In applied position, thereinforcing strips have their edge flanges 4 spaced apart, andstrengtheningv bars or ribs 6 are secured between adjacent edge flangesby bolts or rivets 7. i

The projection ofthe shell beyond .the rear end of the reinforcingstrips provides an annular channel 8, the strips being interruptedslightly ini rear of the forward end of the shell to provide a secondsimilar annular channel 9. The ribs 6 are omitted between the edgeiianges 4 of the reinforcing strips 'and digging teeth 10 of anappropriate form are removably secured between'the edge flanges 4 of thereinforcing strips at this forward portionof the reinforced excavatingreceptacle. The diggmg teeth 10 are of usual digging point form, andrearwardly of the point are recessed rto receive the forward ed e of theshell. These teeth on the` ,Outer .si e of the yshell have rearwardlyextending portions which are inserted between the flanges 11 of eachpair and secured thereto.

As thus arranged, the receptacle is of cylindrical form, presentingexteriorly a series of longitudinally arranged ribs, which reinforce thereceptacle and at the same time provide against excessive wear of thebody thereof, the forward circular edge of the receptacle being providedthruout with a series of spaced cutting or digging teeth.

The receptacle as a whole is supported in a frame including longitudinalframe bars 11, 12, and 18, the bars 11 and 12 being diametricallyopposed with respect to the receptacle, and the bar 13 being centrallyabove the receptacle. Annular hangers 14, secured to the respective bars11, 12, and 13, seat in annular channels 8 and 9 of the receptacle, tothereby rotatively support the receptacle in the frame.

An upstanding frame work indicated generally at 15 is connected to thelongitudinal frame bar 13 and braced at 16 from the side frame bars 11and 12. Upper and lower guide rollers 17 are mounted in the frame 15 'atappropriate points, the rollers being grooved to cooperate with thecable 1, whereby the excavator as a whole is adapted for appropriatemovement longitudinally of the cable. The inclined frame bars 27 formingpart of the frame 15, are inclined upwardly and forwardly and areconnected at their upper ends above the upper guide rollers 17 bylongitudinal bars 28. These bars extend rearwardly of the rearmost bars27 and are connected to the upper end of rods 29, which at their lowerends are connected to a. curved frame 30, the forward end of which isconnected to the bars 13, and the rear end of which is provided with 'aroller 31 to cooperate with the arm 20 of the door.

The rear end of the excavating receptacle is closed by a door 18pivotally supported at 19 at the rear end of the longitudinal frame bar13, an arm 2O rising from the pivotal connection as a rigid part of thedoor structure. The door is adapted to be closed by gravital movement,and to be held closed by a. series of interconnected levers 21, whichextend thru and terminate in advance of the receptacle in a trip lever22, pivoted between the forward bars 27 and provided with a weight 23adapted for adjustable positioning on the trip lever. The free end ofthe re'armost lever 21 which is pivotally supported between the rearbars 27 is adapted to rest normally immediately in advance of ythe arm'20, thus preventing opening of the door, the'systein yof levers beingadapted for adjustable connection one to the other, through a link 24adapted for connection with any one of a series of holes in each of thelevers, When the trip lever is moved ranged for adjustable connectionwith the cable 1, and is of a. form to pei-init the free end of the triplever to ride therein, so that further forward movement of thereceptacle will operate the series of levers to release the door. Thedoor operating means, as well as the means for holding the door inclosed position, are thus arranged wholly beyond the excavatingreceptacle, and are little liable to become inoperative thru theaccumulation of dirt.

The side frame bars 11 and 12 are formed at their forward ends for theremovable connection thereto of a draft means 26, here shown as a chain,thru which the excavator may be forced into the material to bevexcavated or drawn from place to place after being loaded.

As stated, the excavatingreceptacle is inoiiiited for free rotation inthe hangers 14, and as the receptacle is of cylindrical form` it is ofcourse apparent that it would be effective for loading purposes in anyrotative position. Therefore, if obstruction is encountered in digging,the natural tendency to deflect the edge of the receptacle, which in theusual shovel typev would prevent proper loading, will, in the presenttype, merely turn the receptacle in its bearings until the obstructionis displaced or the receptacle rides around the same. 1n any event, anormal load will be obtained under all conditions of operation.

Claims:

1. An excavating receptacle vcomprising a shell of cylindrical form,longitudinally arranged reinforcing strips seciired on the exterior ofthe shell and having out turned flanges and reinforcing bars securedbetween said flanges.

2. An excavating receptacle comprising a cylindrical shell, spacedstrips having out turned edge flanges secured to the exterior .of theshell adjacent one end thereof, and

digging teeth removably secured between said flanges.

3. An excavator including a frame, annular hangers carried thereby, anda cylindrical excavating receptacle mounted for free rotative movementin the hangers.

l. An excavator including a freely rotative excavating receptacle, avdoor closing one end thereof, and means arranged wholly beyond thereceptacle for holding the door in closed relation, said means beingoperable to release the door for opening under gravital influence.

5. ln an excavator, a frame work, a receptacle revoluble therein andhaving a cutting edge, door for the receptacle, a cable lupon which theframe work is mounted for sliding movement, and means arranged beyondthe receptacle for tripping the door.

6. In an excavator, a Jframe Work, a reoeptaele revoluble therein andhaving a out- 5 ting edge, a door Jfor the receptacle, a cable uponwhich the frame Work is mounted for sliding movement, and tripping meansadjust-ably secured upon the cable, lever mechanism on the receptaclecooperating with the door and adapted to be engaged by the trippingmeans for automatically releasing the door in the travel of the frameWork on the cable. v

In testimony whereof I alix my signature.

PHILIP NEARY.

